J/ApJ/856/15 Stellar mass-metallicity relation. I. (Leethochawalit+, 2018)
Evolution of the stellar mass-metallicity relation.
I. Galaxies in the z∼0.4 cluster Cl0024.
Leethochawalit N., Kirby E.N., Moran S.M., Ellis R.S., Treu T.
<Astrophys. J., 856, 15 (2018)>
=2018ApJ...856...15L 2018ApJ...856...15L
ADC_Keywords: Clusters, galaxy; Galaxies, spectra; Abundances, [Fe/H];
Stars, masses; Surveys
Keywords: galaxies: abundances ; galaxies: evolution ; galaxies: stellar content
Abstract:
We present the stellar mass-stellar metallicity relationship (MZR) in
the galaxy cluster Cl0024+1654 at z∼0.4 using full-spectrum stellar
population synthesis modeling of individual quiescent galaxies. The
lower limit of our stellar mass range is M*=109.7M☉, the
lowest galaxy mass at which individual stellar metallicity has been
measured beyond the local universe. We report a detection of an
evolution of the stellar MZR with observed redshift at
0.037±0.007dex per Gyr, consistent with the predictions from
hydrodynamical simulations. Additionally, we find that the evolution
of the stellar MZR with observed redshift can be explained by an
evolution of the stellar MZR with the formation time of galaxies,
i.e., when the single stellar population (SSP)-equivalent ages of
galaxies are taken into account. This behavior is consistent with
stars forming out of gas that also has an MZR with a normalization
that decreases with redshift. Lastly, we find that over the observed
mass range, the MZR can be described by a linear function with a
shallow slope ([Fe/H]∝(0.16±0.03)logM*). The slope suggests
that galaxy feedback, in terms of mass-loading factor, might be
mass-independent over the observed mass and redshift range.
Description:
We leverage a large imaging and spectroscopic survey of the z∼0.4
galaxy cluster Cl0024+1654. The study provides comprehensive Keck
spectroscopy and Hubble Space Telescope (HST) imaging of Cl0024+17
members.
Moran+ (2007, J/ApJ/659/1138) provide complete details of the survey.
In summary, the HST imaging of Cl0024+17 consists of 39 sparsely
sampled WFPC2 images taken in the F814W filter. The imaged field spans
up to 5Mpc from the cluster center. Supplementing the HST imaging, the
study also provides infrared imaging in the Ks-band and J-band from
the WIRC camera on the Hale 200 inch telescope, optical imaging in the
BVRI bands from the 3.6m Canada-France-Hawaii Telescope, and both
near- and far-ultraviolet (NUV/FUV) imaging on the Galaxy Evolution
Explorer (GALEX) satellite. We used the photometric catalog from the
survey's website (http://www.astro.caltech.edu/clusters/).
The survey used DEIMOS on the Keck II telescope to obtain deep spectra
of 300 member galaxies to MV=-18. The observations took place
between 2003 and 2005 (R∼2000-3000; spectral range of 3500-5500Å).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 65 62 Catalog of measured ages and metallicities
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See also:
III/232 : STELIB: A library of stellar spectra at R∼2000 (Le Borgne+, 2003)
J/A+A/372/391 : Spectroscopic Survey of Cl 0024+1654 (Czoske+, 2001)
J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003)
J/AJ/126/2644 : CL 0024+1654 UBVI photometry (Alexov+, 2003)
J/AJ/127/2002 : Star Formation Rate of NFGS galaxies (Kewley+, 2004)
J/ApJ/634/977 : Redshifts in Cl 0024+16 members (Moran+, 2005)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/ApJ/665/1067 : Velocities in Cl 0024+16 and MS 0451-03 (Moran+, 2007)
J/ApJ/659/1138 : Intermediate-redshift spiral galaxies Vmax (Moran+, 2007)
J/ApJ/671/1503 : Cl 0024+16 and MS 0451-03 spectrophotometry (Moran+, 2007)
J/MNRAS/404/1639 : MILES base models & new line index system (Vazdekis+, 2010)
J/ApJS/200/8 : AGES: the AGN and Galaxy Evolution Survey (Kochanek+, 2012)
J/MNRAS/432/3141 : Morphological classification of PM2GC gal. (Calvi+, 2013)
J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013)
J/ApJ/788/72 : Observed sample of z∼0.7 massive galaxies (Gallazzi+, 2014)
J/ApJ/795/165 : Line ratios in z∼2-3 gal. from KBSS-MOSFIRE (Steidel+, 2014)
J/ApJ/822/42 : z∼3.3 star-forming galaxies NIR spectra (Onodera+, 2016)
J/ApJ/835/254 : GLASS. IX. HFF & GLASS structural param. (Morishita+, 2017)
http://www.astro.caltech.edu/clusters/ : Cl0024+17 and MS0451-03 home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq [1/62] Sequential running number
4- 5 I2 h RAh [0] Hour of Right Ascension (J2000)
7- 8 I2 min RAm [25/27] Minute of Right Ascension (J2000)
10- 14 F5.2 s RAs Second of Right Ascension (J2000)
16 A1 --- DE- [+] Sign of the Declination (J2000)
17- 18 I2 deg DEd [17] Degree of Declination (J2000)
20- 21 I2 arcmin DEm [7/20] Arcminute of Declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000)
28- 31 F4.1 [Msun] logM* [9.7/11.5] log stellar mass
33- 37 F5.2 [Sun] [Fe/H] [-0.8/0.2] log Fe/H abundance ratio
39- 42 F4.2 [Sun] E_[Fe/H] [0.04/0.4] Upper uncertainty in [Fe/H]
44- 47 F4.2 [Sun] e_[Fe/H] [0.03/0.6] Lower uncertainty in [Fe/H]
49- 52 F4.1 Gyr Age [1.3/10.0] Age
54- 56 F3.1 Gyr E_Age [0/5.2] Upper uncertainty in Age
58- 60 F3.1 Gyr e_Age [0.1/5.1] Lower uncertainty in Age
62- 65 F4.1 --- S/N [7.9/27.8] Signal-to-Noise
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 11-Feb-2019